OT: Managing Blog Feeds

I stumbled across a great RSS/Atom feed reader called Sage an extension exclusively for the Mozilla Firefox web browser. It allows you to click a button, and instantly see which blogs you are watching have gotten updated (along with viewing the content). Since my area's REI club has a group account on Yahoo!, I can also view updates to the message board there as well. Pretty neat! Saves me the trouble of going to each web site independently and looking to see what content has been updated. The only drawback I see at the moment is the fact it doesn't view a blog as being updated when new comments are added.